Separation and oxygen-alkylation of phenols from phenol-containing hydrocarbonaceous streams

摘要

Properties of phenol-containing hydrocarbonaceous streams are improved by first treating the stream with a C1 to C10 alcohol and an acid. If enough alcohol and acid are employed, two liquid phases are formed, an alcohol/acid phase and a hydrocarbonaceous phase. The alcohol/acid phase, which now contains phenols, can be separated and contacted with a C1 to C16 olefin or the olefin can be added in situ. In any case, oxygen-alkylation of the phenolic groups occurs.